Jove
Visualize
Contact Us

Related Concept Videos

Chirality in Nature02:30

Chirality in Nature

16.5K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
16.5K
Chirality at Nitrogen, Phosphorus, and Sulfur02:30

Chirality at Nitrogen, Phosphorus, and Sulfur

6.8K
Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
6.8K
Chirality02:25

Chirality

28.9K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
28.9K
X-ray Diffraction of Biological Samples01:10

X-ray Diffraction of Biological Samples

4.6K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are  scattered by the electron clouds around the sample atoms. The  X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
4.6K
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies
  1. Home
  2. Chitin Nanocrystals From Various Biological Sources And Their Chiral Nematic Suspensions In Water.
  1. Home
  2. Chitin Nanocrystals From Various Biological Sources And Their Chiral Nematic Suspensions In Water.

Related Experiment Video

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
06:36

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Published on: February 27, 2021

4.1K

Chitin Nanocrystals from Various Biological Sources and Their Chiral Nematic Suspensions in Water.

Florian J Kolb1, Damyana M Takeva1, Nils von Seggern2

  • 1Institute of Physical Chemistry, University of Stuttgart, 70569 Stuttgart, Germany.

Biomacromolecules
|December 3, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

The biological source of chitin nanocrystals (ChNCs) significantly impacts their size and liquid-crystalline properties. Oyster mushroom-derived ChNCs exhibited a notably smaller helical pitch, highlighting the importance of origin for ChNC applications.

More Related Videos

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
09:43

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy

Published on: August 13, 2019

9.8K
Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time
11:05

Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time

Published on: October 26, 2016

9.4K

Related Experiment Videos

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
06:36

Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper

Published on: February 27, 2021

4.1K
Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
09:43

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy

Published on: August 13, 2019

9.8K
Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time
11:05

Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time

Published on: October 26, 2016

9.4K

Area of Science:

  • Materials Science
  • Biotechnology
  • Nanotechnology

Background:

  • Rod-shaped chitin nanocrystals (ChNCs) form liquid-crystalline suspensions, similar to cellulose nanocrystals (CNCs).
  • The properties of these suspensions are crucial for potential applications.

Purpose of the Study:

  • To investigate how the biological source of ChNCs influences their liquid-crystalline suspension properties.
  • To analyze the impact of biological origin on phase separation diagrams and helical pitch.

Main Methods:

  • ChNCs were isolated from various biological sources (snow crab, shrimp, krill, squid, black soldier fly, oyster mushroom) using identical acid hydrolysis conditions.
  • Geometrical dimensions and surface charges of ChNCs were analyzed.
  • Liquid-crystalline suspension properties were characterized.

Main Results:

  • The biological source significantly affects ChNC length and aspect ratio.
  • ChNC dimensions directly influence the stability range and helical pitch of chiral-nematic suspensions.
  • ChNCs from oyster mushroom displayed a significantly smaller helical pitch.

Conclusions:

  • The biological origin of ChNCs is a critical factor determining their properties.
  • Understanding the influence of source material is essential for tailoring ChNCs for specific applications.